package com.mingdong.first.waiguan.hometheater;

public class Popcorn {

	public static Popcorn instence = null;
	
	private Popcorn(){
				
	}
	
	public static Popcorn getInstence(){
		
		if(instence == null){
			instence = new Popcorn();
		}
		return instence;
	}
	
	public void on(){
		System.out.println("Popcorn on");
	}
	
	public void off(){
		System.out.println("Popcorn off");
	}
	public void pop(){
		System.out.println("Popcorn pop");
	}
	
}
